The electric potential at the origin of an xy-coordinate system is 40 V. A -8.0-μC charge is brought from x = +∞ to that point. What is the electric potential energy of this charge at the origin? Answer A) 8.0 μJ B) 40 μJ C) -3.2 × 10-4 J D) -40 μJ

Estimate how long it would take one person to mow a football field using an ordinary home lawn mower. Assume the mower moves with a 1 km/h speed, and has a 0.5m width.

Q. Length of a string tied to 2 rigid bodies is 40cm. Max length(wavelength in cm) o a stationary ave produced on it, is a.)20 b.)80 c.)40 d.)120 Please give your ans with correct explanations

At a spot in the ocean, the surface irradiance is 7.8*10^16 photons and k=.14 m^-1. At what depth does the euphotic zone end? Your airplane leaves 20 degrees N(linear velocity= 845 nm/h) heading to a point due north at 25 degrees north (linear velocity = 815 nm/h). You set the autopilot dor...